I have seen this awesome idea: BLOG BLITZ hosted by DL Hammons (he of Write Club fabulousness). See this post here to join in/get all the deets, but the idea is this:
You sign up on the linky, and become part of the Blog Blitz Team. From time to time DL will select a deserving blog and date and email everyone the info. On that date everyone goes out of their way to visit that blog and blitz it with comments. How nice to get encouraging comments all out of the blue!
So join in, spread the word, sign up ;)